There's such a long history of hating those we deem outsiders or foreigners that we can find xenophobia in all cultures throughout recorded history. As climate change accelerates we can expect the number of climate refugees to likewise accelerate. Sometimes they will be fleeing directly weather-related events like drought or hurricane-caused destruction but most often we should expect that they will be fleeing the violence and chaos that climate-related disasters make more likely. When climate refugees meet boarders, if history and especially current events are any indicator, they may face genocide. What can we do to make this less likely?
Short background reading from the American Psychological Association: https://www.apa.org/advocacy/immigration/prejudice-facts.pdf
Image: From this 9 September 2015 article: http://america.aljazeera.com/opinions/2015/9/the-climate-wars-are-coming--and-more-refugees-with-them.html